Mechanical movement



May 1927' E. BRYANT MECHANICAL MOVEMENT Filed May 192$ Patented May 24,1927.

IUNITEDISTATEQS.

g p 1*,6-30i164 PATENT OFFICE.

'ELMER BRYANT; OF LEXINGTON, KENTUCKY.

ECHANICAL MOVEMENT.

Application filed May 8,

v y e nt r ent or st p' y ep r ary motion may be caused with respect to a shaft to be driven constantly in one direction, by the use of a reciprocating motor.

Vith the above general objects in view,

and othersthat will'become apparent as the nature of the inventionisbetter understood, the same consists in the novel form, combi nation and arrangement of parts hereinafter more fully described, shown in the accompanying drawing and claimed.

In the drawing, wherein like reference characters indicate corresponding parts throughout the several views, v

Figure 1 is a front elevational View 'o fa device constructed accordance with the present invention; a

Figure 2 is a side elevational viewthereof looking toward the left of Figure 1 Figure 3 is a longitudinalsection takenfreely slidable therethrough.

substantially upon line 3-73 of Figure. 2;

Figure l is a transverse section of the motor taken upon line :4.-4: of Figural;

and i r s a Figure 5 is a transverse sectional view taken upon line 5. -5 of Figure 3.

Referring more in detail to the drawing, 5 indicates a suitable frame or support through the lower portion of which is ex: tended an end of the shaft 6 to which itis desired to impart an intermittent or step by s ep ro ary m ion n e ordane w th h pres nt in e tion s t b e r cip o at g, m e i rigi y moun d pon the rame t a pai above he shaft 6, so at. i

" Pl nge 7 P je s ow a d y e epera i e conn t on with he shaf 6,. as i l p sent: y becom app t Th s mote 'is p f: tably n e atur of as d, wh se c il or winding 8 is suitably provided upon a rigid ppo ng p l 9 hin h ch he p unger or co e 7 is reeiproee e: T e nd flanges of the spool 9 may be equipped with ears 10 for facilitating rigid attachment of the solenoid tobthe frame 5 as shown, and rigid with and projecting upwardly from the upper end of the core 7 is a guide rod 1926. Serial No. 107,751.

11 which slida'bly projects through a guide slot 12 in the upper end of the spool), so as to efiectively guide the core 7 and insure against binding of the same when in operatlon, due to the tilted or inclined position in which the solenoid is mounted as shown clearly 4 in Figure 1.

As shown, the core 7 is quite heavy so as to effectively lower by gravity as soon as the coil 8 i is de-energized, .the core being adapted to, be elevated upon cnergization of the coil to thereby complete the reciprocatory motion imparted to the core of the solenoid, "However, it; is obvious that the downward movement of the core may be assisted by spring means or the like if found necessary or desirable. The upper free end of the guide rod ll is preferably providedwith a crosspin l3 orother suitable stop member for engagement with the upper end of the spool 9 so as to limit the downward movement ofthe core 7. The shock caused by suddenly arrestingthe downward motion of the core 7 may be suitably cushioned or absorbed by providing a resilient washer or other suitable cushion element in the path of the stop pin 13 as indicated at 14, such washer being disposed against the upper end of the spool 9 and having the guide rod 14 .A disk or wheel 15 is fixed upon theadiacent end of the shaft 6, and this disk is provided at suitable regular intervals with rigid laterally projecting pins 16 adapted to be successively engaged by a ratchet pawl 17 which ispivoted at its upper end as at 18 to the lower end of the core 7 and which downwar ly is permitted, by reason of thefact that the pivot 18 permits; the pa wl to,

swing outwardly or away from: the wheel .5- By as n'of h ae l at he el n id. is disposed at an inclination, the'pawl 17 will tend toswing inwardly or, toward the wheel 15 under the action er gravity so.thatq its, operative engagement withithe pinsld suitablv energized so as to attract the core 't'j and cause the same to be. elevated. lVhen this takes place the hooked lower end of the pawl 17 will engage the adjacent one of the 1 pins 16 disposed in the path of the same, and upon continued upward movement of the core 7 said pin will be moved upwardly so as to cause a partial rotation of the shaft- 6. lVhen the core 7 has reached its highest a point of movement the rotation of theshaft G will cease, whereupon the coil 8 will be deenergized and the core allowed to immediately lower by gravity to its initial position in the operation outlined above as shown 2 in Figure 1. In this operation, the next succeeding pin 16 of the wheel has been moved into the path of the hooked end of pawl 17, but such pawl. in lowering again, will simply ratchet past this next succeed- .m ing pin due to the beveled side 19 provided on the lower end of said pawl. It is there-' fore apparent that the pawl will not cause backward rotation of shaft 6, but will return to a position for effective engagement with 3 the aforesaid succeeding pin 16 upon a repeated energization of the coil 8, whereby another similar partial rotation of the shaft 6 will be caused in the same direction when the core 7 is again elevated.

From the foregoing description it is believed that the construction and operation as well as the advantages of the present invention will be readily understood and appreciated by those skilled in the art.

Minor changes may be made without. de-

parting from the spirit and scope of the invention as claimed.

lVhat I claim as new is:

1. A mechanical movement for converting reciprocating movement into step by step rotary movement, a. rotatable shaft, a wheel fixed on said shaft and provided with spaced rigid laterally projecting pins, a reciprocating motor aranged above the axial center of the wheel having a reciprocable plunger normally arranged at one side of the axial center of the wheel, and a ratchet pawl pivoted to the plungerfor successive engagement with the pins.

2. A device of the class described coinl jng a motor adapted to be rigidly mounted in an inclined position and having a rep ocable plunger, a rotatable shaft, a wheel r fixed upon said shaft and provided with laterally projec ting pins upon one side arranged in a circular series at regular intervalsyand a ratchet pawl pivoted at one end to the plunger so as to normally tend to swing under the. action of gravity in the plane. of said wheel toward said pins.

A device o l the class described omprising a motor adapted to ho rigidly nmunted in an inclined position and having' a reciprw cable. plunger, a rotatable shaft, :1 wheel fixed upon said shaft. and provided with laterally projecting pins upon one side arranged in a circular series at regular inter vals. and a ratchet pawl pivoted at one end to the plunger so as to normally tend to swing under the action of gravity in the plane of said wheel toward said pins, said pawl having a hook-shaped end portion facing the plunger and provided with a beveled inner side below the hooked portion of the pawl and presented toward said pins.

4. A device of the class described comprising a solenoid adapted to be secured to a suitable support in an inclined position and having a core adapted to be elevated when attracted and adapted to automatically lowor by gravity, a ratchet: pawl pivotally attached at one end to the lower end of said core and having an upwardly facing hook portion and a beveled innerside below the latter, a shaft mounted for rotation, and a wheel adapted to be secured upon said shaft and provided with a series of uniformly spaced laterally projecting pins arranged in the path of movement of said pawl so as to be successively engaged by the hooked portion thereof when the core is elevated.

5. A device of the class described comprising a solenoid adapted to be secured to a suitable support in an inclined position and having a core adapted to be elevated when attracted and adapted to automatically lower by gravity, a. ratchet pawl pivotall attached at one end to the lower end of said core and having an upwardly facing hook portion and a beveled inner side belowthe latter, a shaft mounted for rotation, and a wheel adapted to be secured upon said shaft; and provided with a series of uniformly spaced laterally projecting pins arranged in the path of movement of said pawl so as to be successively engaged by the hooked portion thereof when the core is elevated, said solenoid embodying a spool having a winding thereon and within which the core is movable, an upwardly projecting axial guide rod rigid with the upper end of said core and slidably extending through the upper end of said spool for preventing binding of the core during its movements, and means to limit the downward movement of said core.

6. A device of the class described comprising a solenoid adapted to be secured to a suitable support in an inclined position and having a core adapted to be elevated when attracted and adapted to automatically lower by gravity, a ratchet pawl pivotally attached at one end to the lower end of said core and having an upwardly facing hook portion and a beveled inner side below the latter, a shaft mounted for rotation, and a wheel adapted to be secured upon said shaft and provided with a series of uniformly spaced laterally projecting pins arranged in the path of movement of said pawl soas to be successively engaged by the hooked portion thereof when the core is elevated, said solenoid embodying a spool having a winding thereon and within which the core is movable, an upwardly projecting axial guide rod rigid with the upper end of said core and slidably extending through the upper end of said spool for preventing binding of the core during its movements, and means to limit the downward movement of said core; said means comprising a stop pin on i the upper end of said guide rod, and a cushion element on the upper end of the spool engageable by said stop pin for absorbing shock incident to arresting downward movement of the core by said stop pin.

In testimony whereof I aflix my signature.

ELMER BRYANT. 

